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Finding the Fourth Proportional to 2,138.58, 3,208.05 and 599.58

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Solution

The fourth proportional to 2,138.58, 3,208.05 and 599.58 is: 899.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.58 : 3,208.05 = 599.58 : x
  2. Step 2: Convert to fraction form
    2,138.58/3,208.05 = 599.58/x
  3. Step 3: Cross multiply
    2,138.58x = 3,208.05 × 599.58
  4. Step 4: Simplify right side
    2,138.58x = 1,923,482.62
  5. Step 5: Solve for x
    x = 1,923,482.62/2,138.58
  6. Step 6: Final answer
    x = 899.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.